Oes op one-thied to heebeet glanville



(No Model.)

T. JUDGE & T. CLAYTON.

RASP.

Pa tentedAl lg. 18', 1885.

n. FEKERS. Pmwmm n mr. Wishingium o. a

' bolts b b b, and an intervening space is pre- UNITED STATES PATENT OFF CE.

THOMAS JUDGE AND THOMAS CLAYTON, OF PHILADELPHIA, PA., ASSIGN- ORS OF ONE-THIRD TO HERBERT GLANVILLE, OF SAME PLACE.

RASP.

SPECIFICATION forming part of Letters Patent No. 324,389, dated August 18, 1885. A Application filed September 10, 1884. (No model.)

To aZZ whom it may concern:

Be it known that we, THOMAS JUDGE and THoMAs CLAYTON, subjects of the Queen of Great Britain. residing at Philadelphia, in the county of Phildelphia and State of Pennsylvania, have invented certain new and useful Improvements in Rasps, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has reference to improvements in rasps or rough files; and the invention consists in the construction of a rasp or rough file by bolting or otherwise securing together two or more parallel notched or serrated metallic strips or blades, having intervening blank spaces between said parallel strips or blades.

In the accompanying drawings, Figure l is a face view of our improved rasp, shown provided with a handle. Fig. 2 is a partly sectional view on line a a"- of Fig. 1. Fig. 3 is a cross-section on line 3 3 of Fig. 1, showing clearly the parallel arrangement of the strips or blades. Fig. 4 is a horizontal vertical section of one of the clamping-bolts. Fig. 5 isa side view of the same. The broken line, Fig. 6, illustrates in contour an oval form of rasp.

Similar letters refer to like parts.

In the drawings referred to, a a represent blades or strips provided with notches or serrations a in the form of saw-teeth. The blades a a are secured in position by male and female served between said blades by washers e. The

end portion of the rasp-blades a, upon which the handle 9 is secured, for a short distance is free from notches, and enters a clip, a, provided with a tang, n, for holding the handle g.

A rivet or bolt, f, secures all of the blades or strips to at the handle end of the rasp, and when the bolts 1) b b are withdrawn allows the The washers 0, between each of the blades a,

provide ample room for the clearance and cscape of the dust when rasping or filing.

Rasps constructed in the manner shown are capable of cutting much faster than those heretofore in use, besides the ready removal of any of the blades which may be rendered useless from any cause whatever, and the speedy manner in which the width of the rasp can be enlarged or reduced, recommends it as a simple, inexpensive, and useful tool.

We are aware that a rasp formed of a number of serrated plates which are bolted closely together is not new, and this we disclaim.

We claim as our invention-- 1. In a rasp, the combination of a series of blades having serrated edges, all of which blades are pivot-ed at their inner ends, so as to allow them to be opened for the purpose of being sharpened, substantially as shown.

2. In a rasp, the combination of a series of serrated plates, the bolts 1), and the washers e, which serve to separate the plates, substantially as described.

In testimony that we claim the foregoing as our invention we have subscribed our names in the presence of witnesses.

THOMAS JUDGE. THOMAS CLAYTON.

Vitnesses:

W. B. HILT, Lnwis F. BRoUs, \VALTER NV. OALMoRE. 

